From 33058f2b292b3a581333bdfb21b8f671898c5060 Mon Sep 17 00:00:00 2001
From: Peter Bengtsson <mail@peterbe.com>
Date: Tue, 8 Dec 2020 14:40:17 -0500
Subject: initial commit

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+---
+title: 后代选择器
+slug: Web/CSS/Descendant_combinator
+tags:
+  - CSS
+  - Selectors
+translation_of: Web/CSS/Descendant_combinator
+---
+<div>{{CSSRef("Selectors")}}</div>
+
+<p><strong>后代组合器</strong>（通常用单个空格（<code> </code>）字符表示）组合了两个选择器，如果第二个选择器匹配的元素具有与第一个选择器匹配的祖先（父母，父母的父母，父母的父母的父母等）元素，则它们将被选择。利用后代组合器的选择器称为<dfn>后代选择器</dfn>。</p>
+
+<pre class="brush: css no-line-numbers notranslate">/* List items that are descendants of the "my-things" list */
+ul.my-things li {
+  margin: 2em;
+}</pre>
+
+<p>从技术上讲，后代组合器是两个选择器之间的一个或多个 {{Glossary("CSS")}}  空格字符-空格字符和/或四个控制字符之一：回车，换页，换行和制表符在没有其他组合器的情况下。此外，组成组合器的空白字符可以包含任意数量的CSS注释。</p>
+
+
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox notranslate"><var>selector1</var> <var>selector2</var> {
+  <var>/* property declarations */</var>
+}</pre>
+
+<h2 id="Examples">Examples</h2>
+
+<h3 id="CSS">CSS</h3>
+
+<pre class="brush: css notranslate">li {
+  list-style-type: disc;
+}
+
+li li {
+  list-style-type: circle;
+}
+</pre>
+
+<h3 id="HTML">HTML</h3>
+
+<pre class="brush: html notranslate">&lt;ul&gt;
+  &lt;li&gt;
+    &lt;div&gt;Item 1&lt;/div&gt;
+    &lt;ul&gt;
+      &lt;li&gt;Subitem A&lt;/li&gt;
+      &lt;li&gt;Subitem B&lt;/li&gt;
+    &lt;/ul&gt;
+  &lt;/li&gt;
+  &lt;li&gt;
+    &lt;div&gt;Item 2&lt;/div&gt;
+    &lt;ul&gt;
+      &lt;li&gt;Subitem A&lt;/li&gt;
+      &lt;li&gt;Subitem B&lt;/li&gt;
+    &lt;/ul&gt;
+  &lt;/li&gt;
+&lt;/ul&gt;
+</pre>
+
+<h3 id="Result">Result</h3>
+
+<p>{{EmbedLiveSample("Examples", "100%", 160)}}</p>
+
+<h2 id="规范">规范</h2>
+
+<table class="standard-table">
+ <thead>
+  <tr>
+   <th scope="col">Specification</th>
+   <th scope="col">Status</th>
+   <th scope="col">Comment</th>
+  </tr>
+ </thead>
+ <tbody>
+  <tr>
+   <td>{{SpecName("CSS4 Selectors", "#descendant-combinators", "descendant combinator")}}</td>
+   <td>{{Spec2("CSS4 Selectors")}}</td>
+   <td></td>
+  </tr>
+  <tr>
+   <td>{{SpecName("CSS3 Selectors", "#descendant-combinators", "descendant combinator")}}</td>
+   <td>{{Spec2("CSS3 Selectors")}}</td>
+   <td></td>
+  </tr>
+  <tr>
+   <td>{{SpecName("CSS2.1", "selector.html#descendant-selectors", "descendant selectors")}}</td>
+   <td>{{Spec2("CSS2.1")}}</td>
+   <td></td>
+  </tr>
+  <tr>
+   <td>{{SpecName("CSS1", "#contextual-selectors", "contextual selectors")}}</td>
+   <td>{{Spec2("CSS1")}}</td>
+   <td>Initial definition</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容性">浏览器兼容性</h2>
+
+
+
+<p>{{Compat("css.selectors.descendant")}}</p>
+
+<h2 id="相关">相关</h2>
+
+<ul>
+ <li><a href="/en-US/docs/Web/CSS/Child_combinator">Child combinator</a></li>
+</ul>
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